The Screamin’ Eagle® 135ci Stage IV Performance Crate Engine. Media sourced from Harley’s press release. To top it all off, this engine is also purportedly “the only tuner available to maximize ...

Harley-Davidson’s Screamin’ Eagles factory customs department has unleashed its biggest engine yet, the 131-cube (2147cc) crate motor. The Screamin’ Eagle Milwaukee Eight 131 Crate Engine features the ...

Harley-Davidson Inc. will pay $15 million to end a U.S ... destroy its “Screamin’ Eagle” Pro Super Tuners. But Harley disputed the government’s claim that by selling its tuner through ...

The Harley-Davidson Screamin' Eagle 135 Stage IV performance crate engine is meant for Touring models made from 2021, offers 130 horsepower. ... factory-supplied tuner tool.

Harley-Davidson Inc. agreed Thursday to pay $15 million to settle a U.S. government complaint over racing tuners that caused its motorcycles to emit higher-than-allowed levels of air pollution.

The official name of the bike is Roar, probably because that’s the sound it should be making thanks to the fitting of a Stage 3 tuning kit that increased the Screamin’ Eagle engine's ...

The Screamin' Eagle performance division of Harley-Davidson offers four upgrade stages. Here's what Stage 3 upgrades and how much it can cost.